{description: How a type relates to it's baseDefinition., package_name: hl7.fhir.r2b.expansions, name: TypeDerivationRule, type: null, package_version: 1.4.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/ValueSet/type-derivation-rule', version: 1.4.0}